Home / 18,833.40-28,215.66-8,819.78

Finding the Fourth Proportional to 18,833.40, 28,215.66 and 8,819.78

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Solution

The fourth proportional to 18,833.40, 28,215.66 and 8,819.78 is: 13,213.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,833.40 : 28,215.66 = 8,819.78 : x
  2. Step 2: Convert to fraction form
    18,833.40/28,215.66 = 8,819.78/x
  3. Step 3: Cross multiply
    18,833.40x = 28,215.66 × 8,819.78
  4. Step 4: Simplify right side
    18,833.40x = 248,855,772.68
  5. Step 5: Solve for x
    x = 248,855,772.68/18,833.40
  6. Step 6: Final answer
    x = 13,213.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.